• Journal of information and communication convergence engineering
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• v.10 no.1
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• pp.71-77
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• 2012

This study examines the factors influencing internet protocol television (IPTV) usage intention. Using Davis's technology acceptance model (TAM) and DeLone and McLean's model of information system success, this study investigates the effects of information system quality (information quality, system quality, and service quality) and media quality on IPTV use in terms of perceived usefulness, perceived ease of use, and usage intention. We examined the proposed model by employing structural equation modeling and survey data from 222 IPTV users. The results indicate that information quality, service quality, and media quality had significant effects on perceived usefulness and that information quality and media quality had significant effects on perceived ease of use. However, system quality had no effect on perceived usefulness or perceived ease of use. In addition, perceived ease of use influenced perceived usefulness, and perceived usefulness and perceived ease of use influenced IPTV usage intention. Further, the stability and reliability of IPTV services encouraged IPTV use, and successful IPTV services showed high media quality.

• Proceedings of the Safety Management and Science Conference
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• 2008.11a
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• pp.201-214
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• 2008

IPTV services, as the convergence service of communication and broadcasting, are regarded as the essential information communication media in the New Economy era by providing the consumers with various services through the collaboration among communications, broadcasting and many of other media service providers. The research starts with recognition that, in the new media era, where communication and broadcasting are converging, there are endless demands for new services and various contents, which are driving forces behind the business model of IPTV. In other words, the research expected that customer satisfaction and purchase intention would be different according to the service quality(contents). It was expected that the difference of the perceived service quality(contents) could cause the difference of the process of adopting new technologies. The study on how consumers are satisfied with services provided, and which factors of the service quality have a more significant effect on consumer satisfaction will provide very valuable information for forecasting future trends in the IPTV market. The research tried to investigate factors which influence on consumer satisfaction and loyalty through an empirical survey with real users of IPTV services. Based on the results, the research suggested effective ways of diffusing IPTV.

• ETRI Journal
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• v.36 no.6
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• pp.1041-1050
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• 2014

As the Internet Protocol TV (IPTV) service enters the broadcasting market, the competition intensifies. This paper explains the factors influencing new media subscription and their influential differences on IPTV and digital cable TV (DCTV). We use the information systems success model and gratification opportunity theory to develop our research model. We sample 621 people and collect their responses through web-based measuring software. Structural model analysis shows that the willingness to subscribe to a new broadcasting medium is influenced by three characteristics of the medium: media richness, interactivity, and video quality. Multigroup analysis reveals that motivation to use a medium partially differs between IPTV and DCTV. This research concludes that the IPTV service is not attractive enough to act as a substitute for the already existing DCTV. In addition, for the IPTV service to proliferate, its business model should be promoted with new and differentiated revenue structures and services. The managerial implications in this study help new media businesses set business goals and product functionality, and allocate resources for the continued diffusion of IPTV.

• The Journal of Society for e-Business Studies
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• v.15 no.3
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• pp.63-83
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• 2010

IPTV(Internet Protocol Television) is an innovation technology to lead the new media age. Internet protocol television (IPTV) is a next generation television converged with the Internet which are delivered portal services such as information search, games, movies, home shopping and banking. Generally, service quality affects to adopt or use these technologies. Quality of experience (QoE) is more issue to be considered than service quality because of the technological restriction and limitation that IPTV is accessed by the Internet. The QoE is defined as the cognitive and experienced quality measured with users through an experiment and is conceptually related to service quality. The objective of this paper is to suggest a methodology to measure the QoE of IPTV using a user testing. We find significant factors affecting QoE of IPTV through an exploratory study and measure QoE scores. We found the nine factors of graphics, picture, accuracy, access method, quality of contents, usability, security, and performance important for QoE. The QoE scores of picture, graphics, and quality of contents gained over the average score, but the overall score for IPTV service providers was not high and the QoE needs to be improved.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2010.07a
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• pp.346-348
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• 2010

In this paper, we propose the IPTV QoE evaluation method reflecting service user's preference. This method can evaluate the IPTV service QoE using the fuzzy integral because it usefully employs a subjective decision for QoE(Quality of Experience) evaluation. IPTV subscribers can prepare a criterion to select an IPTV provider who provides high qualityQoE.

• Journal of Broadcast Engineering
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• v.13 no.4
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• pp.440-451
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• 2008

With the advent of IP-based multimedia service based on IP network, there is a rapidly increasing demand for IPTV. Unlike the previous coaxial cable based TV, IPTV provides a variety of convergence services based on IP newark. However, since the IPTV service quality is a lot affected by the network degradation such as packet loss and jitter, it may not be guaranteed. In this paper, we propose an objective measure for various degradations of IPTV-based videos considering subjective assessment. To this end, we first determine QoE(Quality of Experience) indicators, which can affect human visual perception. Then we develop the video quality metric for each QoE indicator. Subjective assessment based on MOS is conducted and used to construct mapping relationship between each measure and perceived visual quality. Experiments are performed on various videos to confirm the efficiency and robustness of the proposed method and show high correlation with subjective assessment.

• 한국정보통신설비학회:학술대회논문집
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• 2007.08a
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• pp.173-175
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• 2007

So far, almost all IP media services are targeted to the specific devices, for example, IPTV services are mainly for TV, and social community services are mainly for PC etc.. This paper describes newly developed media service platform in which the high quality video services can be provided not only to the TV or PC but also to the PMP(Portable Media Player) and even to the mobile phone. The major technical issues of the service platform are synchronization of contents among the different devices and high quality TV grade video display in PMP device. We confirmed successful operation of multi-device converged services in the developed media platform. We also have a trial service plan in Gwangju city at the end of this year.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2010.07a
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• pp.321-322
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• 2010

Mobile IPTV lets mobile users transmit and receive multimedia traffic, such as TV signals, audio, text and graphics, through IP-based networks with the support of quality of service(QoS) and quality of experience(QoE), mobility and interactivity [1]. To provide service feasibility, QoS and seamless mobility to mobile users, we consider mobility prediction, link stability, service requirements to develop resource reservation scheme in mobile IPTV environments. Thus, we study for mobility prediction and QoS-guaranteed mobile IPTV service prior to develop the resource reservation scheme.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.11a
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• pp.333-336
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• 2009

본 논문에서 우리는 차세대 통합망 환경에서 제공된 IPTV 서비스를 이용하는 서비스 가입자의 품질 만족도가 저하될 경우 이와 관련된 네트워크 계층의 QoS 품질 파라미터를 제어함으로써 서비스 품질 만족도를 향상시킬 수 있는 시스템을 제안한다. IPTV 서비스 이용자의 체감 품질(QoE)을 향상시키기 위해, 우리는 IPTV의 멀티미디어 서비스 품질 및 전송 계층의 품질 파라미터간 연동 제어 시스템의 세부 기능 및 동작 절차를 개발하였다. 제안된 시스템을 통해 IPTV 멀티미디어 서비스 및 네트워크 사업자들은 멀티미디어 서비스의 특성 및 네트워크 상황을 고려하여 서비스 이용자에게 향상된 품질의 멀티미디어 서비스를 제공할 수 있다.

• The Journal of the Korea Contents Association
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• v.9 no.3
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• pp.215-224
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• 2009

This study includes literature research and empirical study with the subject of experts in order to anticipate the direction of IPTV evolution, the extension of customer needs, and the technology related to needs themselves. According to the results of the study, it is expected that IPTV will evolve as a converged media platform that integrates the demands of communication, information, and entertainment; and the customer needs for IPTV will be extended from the basic needs for previous TV(high quality and low cost) to 4A(Any Time, Any Where, Any Contents, Any Device) needs. In particular, as the IPTV evolves, the needs for customization(Any Contents needs) will be regarded most importantly among the 4A needs; this implies that what matters is how contents are created and distributed in order for the IPTV to take priority in competition afterwards.